Boot with welted sole construction



March 2l, 1950 P. D. EARL 2,500,937

BOOT WITH WELTED SOLE CONSTRUCTION Filed Feb. 6. 1947 Z/ Pau/ D; Eaf'/@f www www Patented Mar. 2l, 1950 BOOT WITH WELTED SOLE CONSTRUCTIONPaul D. Earl, Malone, N. Y., assignor, by mesne I assignments, to TheCambridge Rubber Company, a corporation of Maryland Application February6, 1947, Serial No. 726,778

1 claim. l

This invention relates to boots and shoes for wear in extremely coldweather wherein acertain degree of insulation of the foot from externallow temperature air is incorporated, and it consists in theconstructions, arrangements and combinations herein described andclaimed.

It is a particular object of the invention to provide an improved soleand welt construction over that disclosed in my prior Patent No.2,394,433, thereby insuring the production of a boot or shoe which willbe more waterproof.

More specifically, it is an object of the invention to provide a unitarysole and welt which may be readily cemented to the insole and lowerportion of the upper of a boot, to effectively waterproof the same. l

Additional objects, advantages and features of invention will beapparent from the following description considered in conjunction withthe accompanying drawings, wherein Figure 1 is a perspective view of aboot constructed in accordance with the invention, with the toe portioncut 01T in a plane at right angles to the longitudinal axis of the shoeso as to show the shoe in cross section.

Figure 2 is an enlarged cross sectional view of the shoe adjacent thevball of the foot thereof, before application of the outer sole andwelt.

Figure 3 is a lsimilar view of the completed boot.

Figure 4 is a cross section illustrating the manner of securing thelining and insole of the boot.

Referring more particularly to the drawings and procedure in productionof the shoe, a lining I5 is first stitched into the shoe vamp andstitched to the quarter and the upper I of the shoe as indicated at Ill.The vamp II and quarter I2 are joinedtogether conventionally, with ataped seam I3 at the junction of the upper and quarter. The forwardportion of the vamp is preferably formed integrally with the quarter I2at respective sides thereof but is divided longitudinally over the toeportion. The lining I is attached to the vamp and quarter and similarlydivided in the vamp and toe of the shoe. The division between the vampand lining is preferably left open until after the mid sole I9 has beenattached, after assembly of the lining pieces I5 along the vamp, toe andquarter.

After assembly of the upper as indicated, a lining I5' is positionedover the foot and heel portions of the assembly and is stitched to theupper. As shown, the linings l5 and I5' are formed of eece sheepskin,suitably sheared, with 2 the fibers presented toward the inside of theshoe. In the attachment of the insole I1 together. with the vamp II andquarter I2 and lining I5, the latter having been already attached at theseam I3 and along the seam I6, if desired, or this attachment omitteduntil after attachment of the insole. The parts are laid together asshown in Figure 4, the edges of the lining I5, I5 and vamp II beingalined, with the edges of the insole Il and then stitched as at !8. Thiscompletes the lining with the vamp and quarter attached. The middle seamI6 of the vamp may be tacked temporarily. The ,assembly is then placedon a last and the exposed under side of the insole Il is now coated witha suitable adhesive, and a thick midsole I9 of felt or other goodinsulating material of a flexible nature and of ,suitable thickness,previously coated with sti cement is applied, as shown in Figure 2, andit may be put under suitable pressure to eiect ya good union.Thereafter, and while the shoe is still lasted, additional adhesive isapplied to the under face of the mid-sole I9 as well as upon the lowerportion of the quarter I2, the adhesive being extended a substantialdistance above the line of stitching I8. A crepe rubber welt 20 of alength so as to extend circumferentially around the mid-sole I9, withthe ends overlapped as at 20', is applied to the adhesive surface of theupper, the welt being of a width so as to overlie the mid-sole whenturned inwardly thereupon, the adhesive on the mid-sole securing thewelt thereto. Adhesive is applied to the exposed side of the inturnedportion of the welt and also to the mid-sole I9, if necessary, and anout-sole 2| of crepe rubber is then applied and cemented to themid-sole.

The mid-sole I9 may be of uniform thickness throughout, extending fromthe heel portion of the shoe to the toe tip, and the out-sole 2| maylikewise be of uniform thickness from heel to toe, although otherpractices may be carried out iri accordance with conventional methods.After emplacement of the out-sole as shown and described, the tacking atseam I6 may be removed and the shoe unlasted. Thereafter, the seam I8may be permanently closed, and a tape 22 applied thereover, as aneffective closure. The front and upper may be laced or otherwise closed,as desired.

It will be seen that with the out-sole securely cemented to the mid-soleand the inturned portion of the welt, with the latter having asubstantial portion cemented to the upper above the line of securementbetween the insole linings 3 and quarteroftheshoe,thebootwillbeei!ectively waterprooied.

I have disclosed my invention with particularity in the .best form knownto me, but it will, nevertheless, be understood that this is exemplary,and that modifications in the construction, arrangement and combinationsof parts, substitution of materials, structural and otherwise, may` bemade without departing from the spirit of the invention, within thescope of the appended claim.

I claim:

A footwear of the character described comprising a eeced liningtherewithin, the edges of the lining and upper being ilush, an insolebeing arranged transversely of the lower edges of the upper and liningand being ilush therewith and secured thereto, a mid-sole of heatinsulating material adhesively secured uponthe outer surface oi' saidinsole, a crepe rubber welt adhesively secured to the upper at a point asubstantial distance above the line of securement between the upper,lining and insole, said welt having a sub- REFERENCES CITED Thefollowing references are oi record in the file oi this patent:

UNITED STATES PATENTS Number Name Date 989,572 Dash Apr. 18, 19111,212,834 Stall Jan. 16, 1917 1,667,629 Friedman Apr. 24, 1928 1,735,986Wray Nov. 19, 1929 1,937,074 Vincente Nov. 28, 1933 2,365,103 Olson Dec.12, 1944 2,394,433 Earl Feb. 5, 1948

